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        <a href="googleapiclient-module.html">Package&nbsp;googleapiclient</a> ::
        <a href="googleapiclient.discovery_cache-module.html">Package&nbsp;discovery_cache</a> ::
        Module&nbsp;file_cache
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<h1 class="epydoc">Source Code for <a href="googleapiclient.discovery_cache.file_cache-module.html">Module googleapiclient.discovery_cache.file_cache</a></h1>
<pre class="py-src">
<a name="L1"></a><tt class="py-lineno">  1</tt>  <tt class="py-line"><tt class="py-comment"># Copyright 2014 Google Inc. All Rights Reserved.</tt> </tt>
<a name="L2"></a><tt class="py-lineno">  2</tt>  <tt class="py-line"><tt class="py-comment">#</tt> </tt>
<a name="L3"></a><tt class="py-lineno">  3</tt>  <tt class="py-line"><tt class="py-comment"># Licensed under the Apache License, Version 2.0 (the "License");</tt> </tt>
<a name="L4"></a><tt class="py-lineno">  4</tt>  <tt class="py-line"><tt class="py-comment"># you may not use this file except in compliance with the License.</tt> </tt>
<a name="L5"></a><tt class="py-lineno">  5</tt>  <tt class="py-line"><tt class="py-comment"># You may obtain a copy of the License at</tt> </tt>
<a name="L6"></a><tt class="py-lineno">  6</tt>  <tt class="py-line"><tt class="py-comment">#</tt> </tt>
<a name="L7"></a><tt class="py-lineno">  7</tt>  <tt class="py-line"><tt class="py-comment">#      http://www.apache.org/licenses/LICENSE-2.0</tt> </tt>
<a name="L8"></a><tt class="py-lineno">  8</tt>  <tt class="py-line"><tt class="py-comment">#</tt> </tt>
<a name="L9"></a><tt class="py-lineno">  9</tt>  <tt class="py-line"><tt class="py-comment"># Unless required by applicable law or agreed to in writing, software</tt> </tt>
<a name="L10"></a><tt class="py-lineno"> 10</tt>  <tt class="py-line"><tt class="py-comment"># distributed under the License is distributed on an "AS IS" BASIS,</tt> </tt>
<a name="L11"></a><tt class="py-lineno"> 11</tt>  <tt class="py-line"><tt class="py-comment"># WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</tt> </tt>
<a name="L12"></a><tt class="py-lineno"> 12</tt>  <tt class="py-line"><tt class="py-comment"># See the License for the specific language governing permissions and</tt> </tt>
<a name="L13"></a><tt class="py-lineno"> 13</tt>  <tt class="py-line"><tt class="py-comment"># limitations under the License.</tt> </tt>
<a name="L14"></a><tt class="py-lineno"> 14</tt>  <tt class="py-line"> </tt>
<a name="L15"></a><tt class="py-lineno"> 15</tt>  <tt class="py-line"><tt class="py-docstring">"""File based cache for the discovery document.</tt> </tt>
<a name="L16"></a><tt class="py-lineno"> 16</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L17"></a><tt class="py-lineno"> 17</tt>  <tt class="py-line"><tt class="py-docstring">The cache is stored in a single file so that multiple processes can</tt> </tt>
<a name="L18"></a><tt class="py-lineno"> 18</tt>  <tt class="py-line"><tt class="py-docstring">share the same cache. It locks the file whenever accesing to the</tt> </tt>
<a name="L19"></a><tt class="py-lineno"> 19</tt>  <tt class="py-line"><tt class="py-docstring">file. When the cache content is corrupted, it will be initialized with</tt> </tt>
<a name="L20"></a><tt class="py-lineno"> 20</tt>  <tt class="py-line"><tt class="py-docstring">an empty cache.</tt> </tt>
<a name="L21"></a><tt class="py-lineno"> 21</tt>  <tt class="py-line"><tt class="py-docstring">"""</tt> </tt>
<a name="L22"></a><tt class="py-lineno"> 22</tt>  <tt class="py-line"> </tt>
<a name="L23"></a><tt class="py-lineno"> 23</tt>  <tt class="py-line"><tt class="py-keyword">from</tt> <tt class="py-name">__future__</tt> <tt class="py-keyword">import</tt> <tt class="py-name">division</tt> </tt>
<a name="L24"></a><tt class="py-lineno"> 24</tt>  <tt class="py-line"> </tt>
<a name="L25"></a><tt class="py-lineno"> 25</tt>  <tt class="py-line"><tt class="py-keyword">import</tt> <tt class="py-name">datetime</tt> </tt>
<a name="L26"></a><tt class="py-lineno"> 26</tt>  <tt class="py-line"><tt class="py-keyword">import</tt> <tt class="py-name">json</tt> </tt>
<a name="L27"></a><tt class="py-lineno"> 27</tt>  <tt class="py-line"><tt class="py-keyword">import</tt> <tt class="py-name">logging</tt> </tt>
<a name="L28"></a><tt class="py-lineno"> 28</tt>  <tt class="py-line"><tt class="py-keyword">import</tt> <tt class="py-name">os</tt> </tt>
<a name="L29"></a><tt class="py-lineno"> 29</tt>  <tt class="py-line"><tt class="py-keyword">import</tt> <tt class="py-name">tempfile</tt> </tt>
<a name="L30"></a><tt class="py-lineno"> 30</tt>  <tt class="py-line"><tt class="py-keyword">import</tt> <tt class="py-name">threading</tt> </tt>
<a name="L31"></a><tt class="py-lineno"> 31</tt>  <tt class="py-line"> </tt>
<a name="L32"></a><tt class="py-lineno"> 32</tt>  <tt class="py-line"><tt class="py-keyword">from</tt> <tt class="py-name">oauth2client</tt><tt class="py-op">.</tt><tt class="py-name">contrib</tt><tt class="py-op">.</tt><tt class="py-name">locked_file</tt> <tt class="py-keyword">import</tt> <tt class="py-name">LockedFile</tt> </tt>
<a name="L33"></a><tt class="py-lineno"> 33</tt>  <tt class="py-line"> </tt>
<a name="L34"></a><tt class="py-lineno"> 34</tt>  <tt class="py-line"><tt class="py-keyword">from</tt> <tt class="py-op">.</tt> <tt class="py-keyword">import</tt> <tt id="link-0" class="py-name" targets="Module googleapiclient.discovery_cache.base=googleapiclient.discovery_cache.base-module.html"><a title="googleapiclient.discovery_cache.base" class="py-name" href="#" onclick="return doclink('link-0', 'base', 'link-0');">base</a></tt> </tt>
<a name="L35"></a><tt class="py-lineno"> 35</tt>  <tt class="py-line"><tt class="py-keyword">from</tt> <tt class="py-op">.</tt><tt class="py-op">.</tt><tt id="link-1" class="py-name" targets="Package googleapiclient.discovery_cache=googleapiclient.discovery_cache-module.html"><a title="googleapiclient.discovery_cache" class="py-name" href="#" onclick="return doclink('link-1', 'discovery_cache', 'link-1');">discovery_cache</a></tt> <tt class="py-keyword">import</tt> <tt id="link-2" class="py-name" targets="Variable googleapiclient.discovery_cache.DISCOVERY_DOC_MAX_AGE=googleapiclient.discovery_cache-module.html#DISCOVERY_DOC_MAX_AGE"><a title="googleapiclient.discovery_cache.DISCOVERY_DOC_MAX_AGE" class="py-name" href="#" onclick="return doclink('link-2', 'DISCOVERY_DOC_MAX_AGE', 'link-2');">DISCOVERY_DOC_MAX_AGE</a></tt> </tt>
<a name="L36"></a><tt class="py-lineno"> 36</tt>  <tt class="py-line"> </tt>
<a name="L37"></a><tt class="py-lineno"> 37</tt>  <tt class="py-line"><tt id="link-3" class="py-name" targets="Variable googleapiclient.discovery.logger=googleapiclient.discovery-module.html#logger,Variable googleapiclient.discovery_cache.file_cache.logger=googleapiclient.discovery_cache.file_cache-module.html#logger"><a title="googleapiclient.discovery.logger
googleapiclient.discovery_cache.file_cache.logger" class="py-name" href="#" onclick="return doclink('link-3', 'logger', 'link-3');">logger</a></tt> <tt class="py-op">=</tt> <tt class="py-name">logging</tt><tt class="py-op">.</tt><tt class="py-name">getLogger</tt><tt class="py-op">(</tt><tt class="py-name">__name__</tt><tt class="py-op">)</tt> </tt>
<a name="L38"></a><tt class="py-lineno"> 38</tt>  <tt class="py-line"> </tt>
<a name="L39"></a><tt class="py-lineno"> 39</tt>  <tt class="py-line"><tt id="link-4" class="py-name" targets="Variable googleapiclient.discovery_cache.file_cache.FILENAME=googleapiclient.discovery_cache.file_cache-module.html#FILENAME"><a title="googleapiclient.discovery_cache.file_cache.FILENAME" class="py-name" href="#" onclick="return doclink('link-4', 'FILENAME', 'link-4');">FILENAME</a></tt> <tt class="py-op">=</tt> <tt class="py-string">'google-api-python-client-discovery-doc.cache'</tt> </tt>
<a name="L40"></a><tt class="py-lineno"> 40</tt>  <tt class="py-line"><tt id="link-5" class="py-name" targets="Variable googleapiclient.channel.EPOCH=googleapiclient.channel-module.html#EPOCH,Variable googleapiclient.discovery_cache.file_cache.EPOCH=googleapiclient.discovery_cache.file_cache-module.html#EPOCH"><a title="googleapiclient.channel.EPOCH
googleapiclient.discovery_cache.file_cache.EPOCH" class="py-name" href="#" onclick="return doclink('link-5', 'EPOCH', 'link-5');">EPOCH</a></tt> <tt class="py-op">=</tt> <tt class="py-name">datetime</tt><tt class="py-op">.</tt><tt class="py-name">datetime</tt><tt class="py-op">.</tt><tt class="py-name">utcfromtimestamp</tt><tt class="py-op">(</tt><tt class="py-number">0</tt><tt class="py-op">)</tt> </tt>
<a name="L41"></a><tt class="py-lineno"> 41</tt>  <tt class="py-line"> </tt>
<a name="L42"></a><tt class="py-lineno"> 42</tt>  <tt class="py-line"> </tt>
<a name="_to_timestamp"></a><div id="_to_timestamp-def"><a name="L43"></a><tt class="py-lineno"> 43</tt> <a class="py-toggle" href="#" id="_to_timestamp-toggle" onclick="return toggle('_to_timestamp');">-</a><tt class="py-line"><tt class="py-keyword">def</tt> <a class="py-def-name" href="googleapiclient.discovery_cache.file_cache-module.html#_to_timestamp">_to_timestamp</a><tt class="py-op">(</tt><tt class="py-param">date</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="_to_timestamp-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="_to_timestamp-expanded"><a name="L44"></a><tt class="py-lineno"> 44</tt>  <tt class="py-line">  <tt class="py-keyword">try</tt><tt class="py-op">:</tt> </tt>
<a name="L45"></a><tt class="py-lineno"> 45</tt>  <tt class="py-line">    <tt class="py-keyword">return</tt> <tt class="py-op">(</tt><tt class="py-name">date</tt> <tt class="py-op">-</tt> <tt id="link-6" class="py-name"><a title="googleapiclient.channel.EPOCH
googleapiclient.discovery_cache.file_cache.EPOCH" class="py-name" href="#" onclick="return doclink('link-6', 'EPOCH', 'link-5');">EPOCH</a></tt><tt class="py-op">)</tt><tt class="py-op">.</tt><tt class="py-name">total_seconds</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L46"></a><tt class="py-lineno"> 46</tt>  <tt class="py-line">  <tt class="py-keyword">except</tt> <tt class="py-name">AttributeError</tt><tt class="py-op">:</tt> </tt>
<a name="L47"></a><tt class="py-lineno"> 47</tt>  <tt class="py-line">    <tt class="py-comment"># The following is the equivalent of total_seconds() in Python2.6.</tt> </tt>
<a name="L48"></a><tt class="py-lineno"> 48</tt>  <tt class="py-line">    <tt class="py-comment"># See also: https://docs.python.org/2/library/datetime.html</tt> </tt>
<a name="L49"></a><tt class="py-lineno"> 49</tt>  <tt class="py-line">    <tt class="py-name">delta</tt> <tt class="py-op">=</tt> <tt class="py-name">date</tt> <tt class="py-op">-</tt> <tt id="link-7" class="py-name"><a title="googleapiclient.channel.EPOCH
googleapiclient.discovery_cache.file_cache.EPOCH" class="py-name" href="#" onclick="return doclink('link-7', 'EPOCH', 'link-5');">EPOCH</a></tt> </tt>
<a name="L50"></a><tt class="py-lineno"> 50</tt>  <tt class="py-line">    <tt class="py-keyword">return</tt> <tt class="py-op">(</tt><tt class="py-op">(</tt><tt class="py-name">delta</tt><tt class="py-op">.</tt><tt class="py-name">microseconds</tt> <tt class="py-op">+</tt> <tt class="py-op">(</tt><tt class="py-name">delta</tt><tt class="py-op">.</tt><tt class="py-name">seconds</tt> <tt class="py-op">+</tt> <tt class="py-name">delta</tt><tt class="py-op">.</tt><tt class="py-name">days</tt> <tt class="py-op">*</tt> <tt class="py-number">24</tt> <tt class="py-op">*</tt> <tt class="py-number">3600</tt><tt class="py-op">)</tt> </tt>
<a name="L51"></a><tt class="py-lineno"> 51</tt>  <tt class="py-line">             <tt class="py-op">*</tt> <tt class="py-number">10</tt><tt class="py-op">**</tt><tt class="py-number">6</tt><tt class="py-op">)</tt> <tt class="py-op">/</tt> <tt class="py-number">10</tt><tt class="py-op">**</tt><tt class="py-number">6</tt><tt class="py-op">)</tt> </tt>
</div><a name="L52"></a><tt class="py-lineno"> 52</tt>  <tt class="py-line"> </tt>
<a name="L53"></a><tt class="py-lineno"> 53</tt>  <tt class="py-line"> </tt>
<a name="_read_or_initialize_cache"></a><div id="_read_or_initialize_cache-def"><a name="L54"></a><tt class="py-lineno"> 54</tt> <a class="py-toggle" href="#" id="_read_or_initialize_cache-toggle" onclick="return toggle('_read_or_initialize_cache');">-</a><tt class="py-line"><tt class="py-keyword">def</tt> <a class="py-def-name" href="googleapiclient.discovery_cache.file_cache-module.html#_read_or_initialize_cache">_read_or_initialize_cache</a><tt class="py-op">(</tt><tt class="py-param">f</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="_read_or_initialize_cache-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="_read_or_initialize_cache-expanded"><a name="L55"></a><tt class="py-lineno"> 55</tt>  <tt class="py-line">  <tt class="py-name">f</tt><tt class="py-op">.</tt><tt class="py-name">file_handle</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">.</tt><tt class="py-name">seek</tt><tt class="py-op">(</tt><tt class="py-number">0</tt><tt class="py-op">)</tt> </tt>
<a name="L56"></a><tt class="py-lineno"> 56</tt>  <tt class="py-line">  <tt class="py-keyword">try</tt><tt class="py-op">:</tt> </tt>
<a name="L57"></a><tt class="py-lineno"> 57</tt>  <tt class="py-line">    <tt id="link-8" class="py-name" targets="Variable googleapiclient.discovery_cache.appengine_memcache.cache=googleapiclient.discovery_cache.appengine_memcache-module.html#cache,Variable googleapiclient.discovery_cache.file_cache.cache=googleapiclient.discovery_cache.file_cache-module.html#cache"><a title="googleapiclient.discovery_cache.appengine_memcache.cache
googleapiclient.discovery_cache.file_cache.cache" class="py-name" href="#" onclick="return doclink('link-8', 'cache', 'link-8');">cache</a></tt> <tt class="py-op">=</tt> <tt class="py-name">json</tt><tt class="py-op">.</tt><tt class="py-name">load</tt><tt class="py-op">(</tt><tt class="py-name">f</tt><tt class="py-op">.</tt><tt class="py-name">file_handle</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L58"></a><tt class="py-lineno"> 58</tt>  <tt class="py-line">  <tt class="py-keyword">except</tt> <tt class="py-name">Exception</tt><tt class="py-op">:</tt> </tt>
<a name="L59"></a><tt class="py-lineno"> 59</tt>  <tt class="py-line">    <tt class="py-comment"># This means it opens the file for the first time, or the cache is</tt> </tt>
<a name="L60"></a><tt class="py-lineno"> 60</tt>  <tt class="py-line">    <tt class="py-comment"># corrupted, so initializing the file with an empty dict.</tt> </tt>
<a name="L61"></a><tt class="py-lineno"> 61</tt>  <tt class="py-line">    <tt id="link-9" class="py-name"><a title="googleapiclient.discovery_cache.appengine_memcache.cache
googleapiclient.discovery_cache.file_cache.cache" class="py-name" href="#" onclick="return doclink('link-9', 'cache', 'link-8');">cache</a></tt> <tt class="py-op">=</tt> <tt class="py-op">{</tt><tt class="py-op">}</tt> </tt>
<a name="L62"></a><tt class="py-lineno"> 62</tt>  <tt class="py-line">    <tt class="py-name">f</tt><tt class="py-op">.</tt><tt class="py-name">file_handle</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">.</tt><tt class="py-name">truncate</tt><tt class="py-op">(</tt><tt class="py-number">0</tt><tt class="py-op">)</tt> </tt>
<a name="L63"></a><tt class="py-lineno"> 63</tt>  <tt class="py-line">    <tt class="py-name">f</tt><tt class="py-op">.</tt><tt class="py-name">file_handle</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">.</tt><tt class="py-name">seek</tt><tt class="py-op">(</tt><tt class="py-number">0</tt><tt class="py-op">)</tt> </tt>
<a name="L64"></a><tt class="py-lineno"> 64</tt>  <tt class="py-line">    <tt class="py-name">json</tt><tt class="py-op">.</tt><tt class="py-name">dump</tt><tt class="py-op">(</tt><tt id="link-10" class="py-name"><a title="googleapiclient.discovery_cache.appengine_memcache.cache
googleapiclient.discovery_cache.file_cache.cache" class="py-name" href="#" onclick="return doclink('link-10', 'cache', 'link-8');">cache</a></tt><tt class="py-op">,</tt> <tt class="py-name">f</tt><tt class="py-op">.</tt><tt class="py-name">file_handle</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L65"></a><tt class="py-lineno"> 65</tt>  <tt class="py-line">  <tt class="py-keyword">return</tt> <tt id="link-11" class="py-name"><a title="googleapiclient.discovery_cache.appengine_memcache.cache
googleapiclient.discovery_cache.file_cache.cache" class="py-name" href="#" onclick="return doclink('link-11', 'cache', 'link-8');">cache</a></tt> </tt>
</div><a name="L66"></a><tt class="py-lineno"> 66</tt>  <tt class="py-line"> </tt>
<a name="L67"></a><tt class="py-lineno"> 67</tt>  <tt class="py-line"> </tt>
<a name="Cache"></a><div id="Cache-def"><a name="L68"></a><tt class="py-lineno"> 68</tt> <a class="py-toggle" href="#" id="Cache-toggle" onclick="return toggle('Cache');">-</a><tt class="py-line"><tt class="py-keyword">class</tt> <a class="py-def-name" href="googleapiclient.discovery_cache.file_cache.Cache-class.html">Cache</a><tt class="py-op">(</tt><tt class="py-base-class">base</tt><tt class="py-op">.</tt><tt class="py-base-class">Cache</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="Cache-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="Cache-expanded"><a name="L69"></a><tt class="py-lineno"> 69</tt>  <tt class="py-line">  <tt class="py-docstring">"""A file based cache for the discovery documents."""</tt> </tt>
<a name="L70"></a><tt class="py-lineno"> 70</tt>  <tt class="py-line"> </tt>
<a name="Cache.__init__"></a><div id="Cache.__init__-def"><a name="L71"></a><tt class="py-lineno"> 71</tt> <a class="py-toggle" href="#" id="Cache.__init__-toggle" onclick="return toggle('Cache.__init__');">-</a><tt class="py-line">  <tt class="py-keyword">def</tt> <a class="py-def-name" href="googleapiclient.discovery_cache.file_cache.Cache-class.html#__init__">__init__</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">max_age</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="Cache.__init__-collapsed" style="display:none;" pad="+++" indent="++++++"></div><div id="Cache.__init__-expanded"><a name="L72"></a><tt class="py-lineno"> 72</tt>  <tt class="py-line">      <tt class="py-docstring">"""Constructor.</tt> </tt>
<a name="L73"></a><tt class="py-lineno"> 73</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L74"></a><tt class="py-lineno"> 74</tt>  <tt class="py-line"><tt class="py-docstring">      Args:</tt> </tt>
<a name="L75"></a><tt class="py-lineno"> 75</tt>  <tt class="py-line"><tt class="py-docstring">        max_age: Cache expiration in seconds.</tt> </tt>
<a name="L76"></a><tt class="py-lineno"> 76</tt>  <tt class="py-line"><tt class="py-docstring">      """</tt> </tt>
<a name="L77"></a><tt class="py-lineno"> 77</tt>  <tt class="py-line">      <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_max_age</tt> <tt class="py-op">=</tt> <tt class="py-name">max_age</tt> </tt>
<a name="L78"></a><tt class="py-lineno"> 78</tt>  <tt class="py-line">      <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_file</tt> <tt class="py-op">=</tt> <tt class="py-name">os</tt><tt class="py-op">.</tt><tt class="py-name">path</tt><tt class="py-op">.</tt><tt class="py-name">join</tt><tt class="py-op">(</tt><tt class="py-name">tempfile</tt><tt class="py-op">.</tt><tt class="py-name">gettempdir</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">,</tt> <tt id="link-12" class="py-name"><a title="googleapiclient.discovery_cache.file_cache.FILENAME" class="py-name" href="#" onclick="return doclink('link-12', 'FILENAME', 'link-4');">FILENAME</a></tt><tt class="py-op">)</tt> </tt>
<a name="L79"></a><tt class="py-lineno"> 79</tt>  <tt class="py-line">      <tt class="py-name">f</tt> <tt class="py-op">=</tt> <tt class="py-name">LockedFile</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_file</tt><tt class="py-op">,</tt> <tt class="py-string">'a+'</tt><tt class="py-op">,</tt> <tt class="py-string">'r'</tt><tt class="py-op">)</tt> </tt>
<a name="L80"></a><tt class="py-lineno"> 80</tt>  <tt class="py-line">      <tt class="py-keyword">try</tt><tt class="py-op">:</tt> </tt>
<a name="L81"></a><tt class="py-lineno"> 81</tt>  <tt class="py-line">        <tt class="py-name">f</tt><tt class="py-op">.</tt><tt class="py-name">open_and_lock</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L82"></a><tt class="py-lineno"> 82</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-name">f</tt><tt class="py-op">.</tt><tt class="py-name">is_locked</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L83"></a><tt class="py-lineno"> 83</tt>  <tt class="py-line">          <tt id="link-13" class="py-name" targets="Function googleapiclient.discovery_cache.file_cache._read_or_initialize_cache()=googleapiclient.discovery_cache.file_cache-module.html#_read_or_initialize_cache"><a title="googleapiclient.discovery_cache.file_cache._read_or_initialize_cache" class="py-name" href="#" onclick="return doclink('link-13', '_read_or_initialize_cache', 'link-13');">_read_or_initialize_cache</a></tt><tt class="py-op">(</tt><tt class="py-name">f</tt><tt class="py-op">)</tt> </tt>
<a name="L84"></a><tt class="py-lineno"> 84</tt>  <tt class="py-line">        <tt class="py-comment"># If we can not obtain the lock, other process or thread must</tt> </tt>
<a name="L85"></a><tt class="py-lineno"> 85</tt>  <tt class="py-line">        <tt class="py-comment"># have initialized the file.</tt> </tt>
<a name="L86"></a><tt class="py-lineno"> 86</tt>  <tt class="py-line">      <tt class="py-keyword">except</tt> <tt class="py-name">Exception</tt> <tt class="py-keyword">as</tt> <tt class="py-name">e</tt><tt class="py-op">:</tt> </tt>
<a name="L87"></a><tt class="py-lineno"> 87</tt>  <tt class="py-line">        <tt class="py-name">logging</tt><tt class="py-op">.</tt><tt class="py-name">warning</tt><tt class="py-op">(</tt><tt class="py-name">e</tt><tt class="py-op">,</tt> <tt class="py-name">exc_info</tt><tt class="py-op">=</tt><tt class="py-name">True</tt><tt class="py-op">)</tt> </tt>
<a name="L88"></a><tt class="py-lineno"> 88</tt>  <tt class="py-line">      <tt class="py-keyword">finally</tt><tt class="py-op">:</tt> </tt>
<a name="L89"></a><tt class="py-lineno"> 89</tt>  <tt class="py-line">        <tt class="py-name">f</tt><tt class="py-op">.</tt><tt class="py-name">unlock_and_close</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
</div><a name="L90"></a><tt class="py-lineno"> 90</tt>  <tt class="py-line"> </tt>
<a name="Cache.get"></a><div id="Cache.get-def"><a name="L91"></a><tt class="py-lineno"> 91</tt> <a class="py-toggle" href="#" id="Cache.get-toggle" onclick="return toggle('Cache.get');">-</a><tt class="py-line">  <tt class="py-keyword">def</tt> <a class="py-def-name" href="googleapiclient.discovery_cache.file_cache.Cache-class.html#get">get</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">url</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="Cache.get-collapsed" style="display:none;" pad="+++" indent="++++++"></div><div id="Cache.get-expanded"><a name="L92"></a><tt class="py-lineno"> 92</tt>  <tt class="py-line">    <tt class="py-name">f</tt> <tt class="py-op">=</tt> <tt class="py-name">LockedFile</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_file</tt><tt class="py-op">,</tt> <tt class="py-string">'r+'</tt><tt class="py-op">,</tt> <tt class="py-string">'r'</tt><tt class="py-op">)</tt> </tt>
<a name="L93"></a><tt class="py-lineno"> 93</tt>  <tt class="py-line">    <tt class="py-keyword">try</tt><tt class="py-op">:</tt> </tt>
<a name="L94"></a><tt class="py-lineno"> 94</tt>  <tt class="py-line">      <tt class="py-name">f</tt><tt class="py-op">.</tt><tt class="py-name">open_and_lock</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L95"></a><tt class="py-lineno"> 95</tt>  <tt class="py-line">      <tt class="py-keyword">if</tt> <tt class="py-name">f</tt><tt class="py-op">.</tt><tt class="py-name">is_locked</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L96"></a><tt class="py-lineno"> 96</tt>  <tt class="py-line">        <tt id="link-14" class="py-name"><a title="googleapiclient.discovery_cache.appengine_memcache.cache
googleapiclient.discovery_cache.file_cache.cache" class="py-name" href="#" onclick="return doclink('link-14', 'cache', 'link-8');">cache</a></tt> <tt class="py-op">=</tt> <tt id="link-15" class="py-name"><a title="googleapiclient.discovery_cache.file_cache._read_or_initialize_cache" class="py-name" href="#" onclick="return doclink('link-15', '_read_or_initialize_cache', 'link-13');">_read_or_initialize_cache</a></tt><tt class="py-op">(</tt><tt class="py-name">f</tt><tt class="py-op">)</tt> </tt>
<a name="L97"></a><tt class="py-lineno"> 97</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-name">url</tt> <tt class="py-keyword">in</tt> <tt id="link-16" class="py-name"><a title="googleapiclient.discovery_cache.appengine_memcache.cache
googleapiclient.discovery_cache.file_cache.cache" class="py-name" href="#" onclick="return doclink('link-16', 'cache', 'link-8');">cache</a></tt><tt class="py-op">:</tt> </tt>
<a name="L98"></a><tt class="py-lineno"> 98</tt>  <tt class="py-line">          <tt class="py-name">content</tt><tt class="py-op">,</tt> <tt class="py-name">t</tt> <tt class="py-op">=</tt> <tt id="link-17" class="py-name"><a title="googleapiclient.discovery_cache.appengine_memcache.cache
googleapiclient.discovery_cache.file_cache.cache" class="py-name" href="#" onclick="return doclink('link-17', 'cache', 'link-8');">cache</a></tt><tt class="py-op">.</tt><tt id="link-18" class="py-name" targets="Method googleapiclient.discovery_cache.appengine_memcache.Cache.get()=googleapiclient.discovery_cache.appengine_memcache.Cache-class.html#get,Method googleapiclient.discovery_cache.base.Cache.get()=googleapiclient.discovery_cache.base.Cache-class.html#get,Method googleapiclient.discovery_cache.file_cache.Cache.get()=googleapiclient.discovery_cache.file_cache.Cache-class.html#get,Method googleapiclient.schema.Schemas.get()=googleapiclient.schema.Schemas-class.html#get"><a title="googleapiclient.discovery_cache.appengine_memcache.Cache.get
googleapiclient.discovery_cache.base.Cache.get
googleapiclient.discovery_cache.file_cache.Cache.get
googleapiclient.schema.Schemas.get" class="py-name" href="#" onclick="return doclink('link-18', 'get', 'link-18');">get</a></tt><tt class="py-op">(</tt><tt class="py-name">url</tt><tt class="py-op">,</tt> <tt class="py-op">(</tt><tt class="py-name">None</tt><tt class="py-op">,</tt> <tt class="py-number">0</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L99"></a><tt class="py-lineno"> 99</tt>  <tt class="py-line">          <tt class="py-keyword">if</tt> <tt id="link-19" class="py-name" targets="Function googleapiclient.discovery_cache.file_cache._to_timestamp()=googleapiclient.discovery_cache.file_cache-module.html#_to_timestamp"><a title="googleapiclient.discovery_cache.file_cache._to_timestamp" class="py-name" href="#" onclick="return doclink('link-19', '_to_timestamp', 'link-19');">_to_timestamp</a></tt><tt class="py-op">(</tt><tt class="py-name">datetime</tt><tt class="py-op">.</tt><tt class="py-name">datetime</tt><tt class="py-op">.</tt><tt class="py-name">now</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> <tt class="py-op">&lt;</tt> <tt class="py-name">t</tt> <tt class="py-op">+</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_max_age</tt><tt class="py-op">:</tt> </tt>
<a name="L100"></a><tt class="py-lineno">100</tt>  <tt class="py-line">            <tt class="py-keyword">return</tt> <tt class="py-name">content</tt> </tt>
<a name="L101"></a><tt class="py-lineno">101</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">None</tt> </tt>
<a name="L102"></a><tt class="py-lineno">102</tt>  <tt class="py-line">      <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L103"></a><tt class="py-lineno">103</tt>  <tt class="py-line">        <tt id="link-20" class="py-name"><a title="googleapiclient.discovery.logger
googleapiclient.discovery_cache.file_cache.logger" class="py-name" href="#" onclick="return doclink('link-20', 'logger', 'link-3');">logger</a></tt><tt class="py-op">.</tt><tt class="py-name">debug</tt><tt class="py-op">(</tt><tt class="py-string">'Could not obtain a lock for the cache file.'</tt><tt class="py-op">)</tt> </tt>
<a name="L104"></a><tt class="py-lineno">104</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">None</tt> </tt>
<a name="L105"></a><tt class="py-lineno">105</tt>  <tt class="py-line">    <tt class="py-keyword">except</tt> <tt class="py-name">Exception</tt> <tt class="py-keyword">as</tt> <tt class="py-name">e</tt><tt class="py-op">:</tt> </tt>
<a name="L106"></a><tt class="py-lineno">106</tt>  <tt class="py-line">      <tt id="link-21" class="py-name"><a title="googleapiclient.discovery.logger
googleapiclient.discovery_cache.file_cache.logger" class="py-name" href="#" onclick="return doclink('link-21', 'logger', 'link-3');">logger</a></tt><tt class="py-op">.</tt><tt class="py-name">warning</tt><tt class="py-op">(</tt><tt class="py-name">e</tt><tt class="py-op">,</tt> <tt class="py-name">exc_info</tt><tt class="py-op">=</tt><tt class="py-name">True</tt><tt class="py-op">)</tt> </tt>
<a name="L107"></a><tt class="py-lineno">107</tt>  <tt class="py-line">    <tt class="py-keyword">finally</tt><tt class="py-op">:</tt> </tt>
<a name="L108"></a><tt class="py-lineno">108</tt>  <tt class="py-line">      <tt class="py-name">f</tt><tt class="py-op">.</tt><tt class="py-name">unlock_and_close</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
</div><a name="L109"></a><tt class="py-lineno">109</tt>  <tt class="py-line"> </tt>
<a name="Cache.set"></a><div id="Cache.set-def"><a name="L110"></a><tt class="py-lineno">110</tt> <a class="py-toggle" href="#" id="Cache.set-toggle" onclick="return toggle('Cache.set');">-</a><tt class="py-line">  <tt class="py-keyword">def</tt> <a class="py-def-name" href="googleapiclient.discovery_cache.file_cache.Cache-class.html#set">set</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">url</tt><tt class="py-op">,</tt> <tt class="py-param">content</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="Cache.set-collapsed" style="display:none;" pad="+++" indent="++++++"></div><div id="Cache.set-expanded"><a name="L111"></a><tt class="py-lineno">111</tt>  <tt class="py-line">    <tt class="py-name">f</tt> <tt class="py-op">=</tt> <tt class="py-name">LockedFile</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_file</tt><tt class="py-op">,</tt> <tt class="py-string">'r+'</tt><tt class="py-op">,</tt> <tt class="py-string">'r'</tt><tt class="py-op">)</tt> </tt>
<a name="L112"></a><tt class="py-lineno">112</tt>  <tt class="py-line">    <tt class="py-keyword">try</tt><tt class="py-op">:</tt> </tt>
<a name="L113"></a><tt class="py-lineno">113</tt>  <tt class="py-line">      <tt class="py-name">f</tt><tt class="py-op">.</tt><tt class="py-name">open_and_lock</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L114"></a><tt class="py-lineno">114</tt>  <tt class="py-line">      <tt class="py-keyword">if</tt> <tt class="py-name">f</tt><tt class="py-op">.</tt><tt class="py-name">is_locked</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L115"></a><tt class="py-lineno">115</tt>  <tt class="py-line">        <tt id="link-22" class="py-name"><a title="googleapiclient.discovery_cache.appengine_memcache.cache
googleapiclient.discovery_cache.file_cache.cache" class="py-name" href="#" onclick="return doclink('link-22', 'cache', 'link-8');">cache</a></tt> <tt class="py-op">=</tt> <tt id="link-23" class="py-name"><a title="googleapiclient.discovery_cache.file_cache._read_or_initialize_cache" class="py-name" href="#" onclick="return doclink('link-23', '_read_or_initialize_cache', 'link-13');">_read_or_initialize_cache</a></tt><tt class="py-op">(</tt><tt class="py-name">f</tt><tt class="py-op">)</tt> </tt>
<a name="L116"></a><tt class="py-lineno">116</tt>  <tt class="py-line">        <tt id="link-24" class="py-name"><a title="googleapiclient.discovery_cache.appengine_memcache.cache
googleapiclient.discovery_cache.file_cache.cache" class="py-name" href="#" onclick="return doclink('link-24', 'cache', 'link-8');">cache</a></tt><tt class="py-op">[</tt><tt class="py-name">url</tt><tt class="py-op">]</tt> <tt class="py-op">=</tt> <tt class="py-op">(</tt><tt class="py-name">content</tt><tt class="py-op">,</tt> <tt id="link-25" class="py-name"><a title="googleapiclient.discovery_cache.file_cache._to_timestamp" class="py-name" href="#" onclick="return doclink('link-25', '_to_timestamp', 'link-19');">_to_timestamp</a></tt><tt class="py-op">(</tt><tt class="py-name">datetime</tt><tt class="py-op">.</tt><tt class="py-name">datetime</tt><tt class="py-op">.</tt><tt class="py-name">now</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L117"></a><tt class="py-lineno">117</tt>  <tt class="py-line">        <tt class="py-comment"># Remove stale cache.</tt> </tt>
<a name="L118"></a><tt class="py-lineno">118</tt>  <tt class="py-line">        <tt class="py-keyword">for</tt> <tt class="py-name">k</tt><tt class="py-op">,</tt> <tt class="py-op">(</tt><tt class="py-name">_</tt><tt class="py-op">,</tt> <tt class="py-name">timestamp</tt><tt class="py-op">)</tt> <tt class="py-keyword">in</tt> <tt class="py-name">list</tt><tt class="py-op">(</tt><tt id="link-26" class="py-name"><a title="googleapiclient.discovery_cache.appengine_memcache.cache
googleapiclient.discovery_cache.file_cache.cache" class="py-name" href="#" onclick="return doclink('link-26', 'cache', 'link-8');">cache</a></tt><tt class="py-op">.</tt><tt class="py-name">items</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L119"></a><tt class="py-lineno">119</tt>  <tt class="py-line">          <tt class="py-keyword">if</tt> <tt id="link-27" class="py-name"><a title="googleapiclient.discovery_cache.file_cache._to_timestamp" class="py-name" href="#" onclick="return doclink('link-27', '_to_timestamp', 'link-19');">_to_timestamp</a></tt><tt class="py-op">(</tt><tt class="py-name">datetime</tt><tt class="py-op">.</tt><tt class="py-name">datetime</tt><tt class="py-op">.</tt><tt class="py-name">now</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> <tt class="py-op">&gt;=</tt> <tt class="py-name">timestamp</tt> <tt class="py-op">+</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_max_age</tt><tt class="py-op">:</tt> </tt>
<a name="L120"></a><tt class="py-lineno">120</tt>  <tt class="py-line">            <tt class="py-keyword">del</tt> <tt id="link-28" class="py-name"><a title="googleapiclient.discovery_cache.appengine_memcache.cache
googleapiclient.discovery_cache.file_cache.cache" class="py-name" href="#" onclick="return doclink('link-28', 'cache', 'link-8');">cache</a></tt><tt class="py-op">[</tt><tt class="py-name">k</tt><tt class="py-op">]</tt> </tt>
<a name="L121"></a><tt class="py-lineno">121</tt>  <tt class="py-line">        <tt class="py-name">f</tt><tt class="py-op">.</tt><tt class="py-name">file_handle</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">.</tt><tt class="py-name">truncate</tt><tt class="py-op">(</tt><tt class="py-number">0</tt><tt class="py-op">)</tt> </tt>
<a name="L122"></a><tt class="py-lineno">122</tt>  <tt class="py-line">        <tt class="py-name">f</tt><tt class="py-op">.</tt><tt class="py-name">file_handle</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">.</tt><tt class="py-name">seek</tt><tt class="py-op">(</tt><tt class="py-number">0</tt><tt class="py-op">)</tt> </tt>
<a name="L123"></a><tt class="py-lineno">123</tt>  <tt class="py-line">        <tt class="py-name">json</tt><tt class="py-op">.</tt><tt class="py-name">dump</tt><tt class="py-op">(</tt><tt id="link-29" class="py-name"><a title="googleapiclient.discovery_cache.appengine_memcache.cache
googleapiclient.discovery_cache.file_cache.cache" class="py-name" href="#" onclick="return doclink('link-29', 'cache', 'link-8');">cache</a></tt><tt class="py-op">,</tt> <tt class="py-name">f</tt><tt class="py-op">.</tt><tt class="py-name">file_handle</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L124"></a><tt class="py-lineno">124</tt>  <tt class="py-line">      <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L125"></a><tt class="py-lineno">125</tt>  <tt class="py-line">        <tt id="link-30" class="py-name"><a title="googleapiclient.discovery.logger
googleapiclient.discovery_cache.file_cache.logger" class="py-name" href="#" onclick="return doclink('link-30', 'logger', 'link-3');">logger</a></tt><tt class="py-op">.</tt><tt class="py-name">debug</tt><tt class="py-op">(</tt><tt class="py-string">'Could not obtain a lock for the cache file.'</tt><tt class="py-op">)</tt> </tt>
<a name="L126"></a><tt class="py-lineno">126</tt>  <tt class="py-line">    <tt class="py-keyword">except</tt> <tt class="py-name">Exception</tt> <tt class="py-keyword">as</tt> <tt class="py-name">e</tt><tt class="py-op">:</tt> </tt>
<a name="L127"></a><tt class="py-lineno">127</tt>  <tt class="py-line">      <tt id="link-31" class="py-name"><a title="googleapiclient.discovery.logger
googleapiclient.discovery_cache.file_cache.logger" class="py-name" href="#" onclick="return doclink('link-31', 'logger', 'link-3');">logger</a></tt><tt class="py-op">.</tt><tt class="py-name">warning</tt><tt class="py-op">(</tt><tt class="py-name">e</tt><tt class="py-op">,</tt> <tt class="py-name">exc_info</tt><tt class="py-op">=</tt><tt class="py-name">True</tt><tt class="py-op">)</tt> </tt>
<a name="L128"></a><tt class="py-lineno">128</tt>  <tt class="py-line">    <tt class="py-keyword">finally</tt><tt class="py-op">:</tt> </tt>
<a name="L129"></a><tt class="py-lineno">129</tt>  <tt class="py-line">      <tt class="py-name">f</tt><tt class="py-op">.</tt><tt class="py-name">unlock_and_close</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
</div></div><a name="L130"></a><tt class="py-lineno">130</tt>  <tt class="py-line"> </tt>
<a name="L131"></a><tt class="py-lineno">131</tt>  <tt class="py-line"> </tt>
<a name="L132"></a><tt class="py-lineno">132</tt>  <tt class="py-line"><tt id="link-32" class="py-name"><a title="googleapiclient.discovery_cache.appengine_memcache.cache
googleapiclient.discovery_cache.file_cache.cache" class="py-name" href="#" onclick="return doclink('link-32', 'cache', 'link-8');">cache</a></tt> <tt class="py-op">=</tt> <tt id="link-33" class="py-name" targets="Class googleapiclient.discovery_cache.appengine_memcache.Cache=googleapiclient.discovery_cache.appengine_memcache.Cache-class.html,Class googleapiclient.discovery_cache.base.Cache=googleapiclient.discovery_cache.base.Cache-class.html,Class googleapiclient.discovery_cache.file_cache.Cache=googleapiclient.discovery_cache.file_cache.Cache-class.html"><a title="googleapiclient.discovery_cache.appengine_memcache.Cache
googleapiclient.discovery_cache.base.Cache
googleapiclient.discovery_cache.file_cache.Cache" class="py-name" href="#" onclick="return doclink('link-33', 'Cache', 'link-33');">Cache</a></tt><tt class="py-op">(</tt><tt class="py-name">max_age</tt><tt class="py-op">=</tt><tt id="link-34" class="py-name"><a title="googleapiclient.discovery_cache.DISCOVERY_DOC_MAX_AGE" class="py-name" href="#" onclick="return doclink('link-34', 'DISCOVERY_DOC_MAX_AGE', 'link-2');">DISCOVERY_DOC_MAX_AGE</a></tt><tt class="py-op">)</tt> </tt>
<a name="L133"></a><tt class="py-lineno">133</tt>  <tt class="py-line"> </tt><script type="text/javascript">
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